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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: -1^3/15 + -2^2/3 : 2’2/3 – |-5/6|

Toán Lớp 7: -1^3/15 + -2^2/3 : 2’2/3 – |-5/6|

Comments ( 2 )

  1. (-1)^(3/15) + (-2)^(2/3) : 2^(2/3) – |-5/6|  
    = (-1) + [(-2)^(2/3) : 2^(2/3)] – 5/6  
    = (-1) + 1 – 5/6    
    = 0 – 5/6  
    = -5/6

  2. -1^3/15 + -2^2/3 : 2’2/3 – |-5/6| 
    = -1/15 + 4/3 : 4/3 – 5/6
    = -1/15 + 4/3 . 3/4 – 5/6
    = -1/15 + 1 – 5/6
    = 14/15 – 5/6
    = 1/10

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222-9+11+12:2*14+14 = ? ( )